A mixture containing 46% of acid is mixed with another mixture containing 77% acid in the ratio 7 : 11. Find the percentage of acid in the mixture formed.

A mixture containing 46% of acid is mixed with another mixture containing 77% acid in the ratio 7 : 11. Find the percentage of acid in the mixture formed. Correct Answer 65%

The mixture is mixed in a ratio 7 : 11. Let the quantities of mixtures mixed be 700 and 1100 litres, respectively. The amount of acid in the mixture formed = 700 * 46 / 100 + 1100 * 77 / 100 = 322 + 847 = 1169 litres The percentage of acid in the mixture so formed = 1169 / 1800 * 100 = 64.94% ≈ 65%
Bissoy MCQ

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